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use fmt;
use mbr;
use gpt;
use sector;
use os;
use io;
use fs;
use strings;
use errors;
use rt;
export fn convert(args: []str) void = {
if (len(args) < 3) {
fmt::fatalf("gptman.convert: needs disk");
};
let source = os::open(args[1], fs::flags::RDONLY)!;
defer io::close(source)!;
const source = mbr::from(source)!;
let freeno: size = 0z;
for (let i = 0z; i < 4; i += 1) {
const entry = &source.bootsector.entries[i];
if (entry.lba_begin == 0 && entry.length == 0)
continue;
freeno += entry.length: size;
};
let file = os::create(args[2], fs::mode::USER_RWX | fs::mode::GROUP_RX | fs::mode::OTHER_RX, fs::flags::RDWR)!;
defer io::close(file)!;
let vol = gpt::create(file, freeno);
gpt::mkbackup(vol);
defer {
gpt::chksums(vol);
gpt::commit(vol)!;
gpt::finish(vol);
};
rt::memcpy(vol.mbr, source.bootsector, size(mbr::bootsector));
for (let i = 0z; i < 4; i += 1) {
const entry = &source.bootsector.entries[i];
if (entry.lba_begin == 0 && entry.length == 0)
continue;
const reader = mbr::partstream_reader(source, entry)!;
const partlength = entry.length;
const part = gpt::allocate(vol, partlength) as *gpt::entry;
const writer = gpt::partstream_writer(vol, part)!;
io::copy(&writer, &reader)!;
vol.mbr.entries[i].lba_begin = part.lba_begin: u32;
vol.mbr.entries[i].length = (part.lba_end - part.lba_begin + 1): u32;
};
vol.mbr.entries[3] = mbr::entry {
part_type = 0xEE,
lba_begin = 0,
length = -1: u32,
...
};
};
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